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Scaba top mounted agitatorScaba top-mounted vertical agitators are used for mixing and agitating process liquids in many industries, including wastewater and industrial applications.
Reliable Scaba agitators for demanding process applications
Efficient wastewater treatment in a pulp mill
Asia Symbol (Shandong) Pulp & Paper Co., Ltd is located in the Chinese city of Rizhao, which served as the host for some of the Olympic events in 2008. In 2010, the world’s largest single pulp line with a capacity of 5’000 t/d started in Rizhao. Its wastewater treatment plant was designed and built by Aquaflow (Veolia), and the plant currently operates with an even smaller environmental impact than what the tough Chinese regulations prescribe. In such a wastewater treatment plant, each process needs the right agitation to achieve a satisfactory treatment effect. To fulfill various applications in the process, Sulzer supplied reliable agitators – both top-mounted and side-mounted – which minimize both power and chemical consumption.
The challenge
- Wide range of application requirements, such as flocculation, flotation, chemical make-up and storage as well as sludge storage and mixing
- Minimize capital and operational expenditures by cost effective design and highest efficiencies
- Highest reliability required, since wastewater treatment plant cannot be shut down
The solution
- Sulzer supplied 11 top-mounted and 4 side-mounted agitators for 8 different applications
- Flexible design, for both top-mounted and side-mounted agitators
- Tailor-made agitators for each position meet the demands of installation and process requirements
- Long and trusted experience in the field ensured right agitation intensity at minimum power
The reliable and flexible design of the Sulzer agitators match the most demanding process applications of our customers.
Patrik Kolmodin
Business Development Manager General Industry
Customer benefit
Long-term customer relationship and Sulzer’s well-proven application knowledge within industrial wastewater treatment were the key factors for Aquaflow when selecting Scaba agitators. For example, sludge agitators were selected on the basis of the actual sludge characteristics, and flotation mixers can handle an air content of 40%. Side-mounted agitators were equipped with longer shafts to adapt to the ctual tank wall thickness. With Scaba agitators, minimum power is needed while reliability is ensured.
Product specification
| Qty. | Application | Type | Tank volume | Inst. power |
| 1 | Sludge mixer, primary and tertiary sludge, 2-5%* | Side | 62 m³ | 7.5 kW |
| 1 | Urea dissolving, urea power + water | Top | 6.5 m³ | 1.1 kW |
| 3 | Flash mixer, wastewater + PAC | Top | 10.8 m³/tank | 11 kW |
| 6 | Flocculation mixer, wastewater | Top | 115 m³/tank | 0.37 kW |
| 1 | Flotation mixer, wastewater + 40% air | Top | 50 m³ | 0.37 kW |
| 1 | Sludge feed tank mixer, secondary sludge with fibres, 2-5%* | Side | 145 m³ | 11 kW |
| 1 | Sludge/liquor mixer, dried sludge 10%* and black liquor | Side | 46 m³ | 15 kW |
| 1 | Bio sludge agitator, bio sludge 1.5-3%* | Side | 30 m³ | 7.5 kW |
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1 |
Sludge mixer, primary and tertiary sludge, 2.5%* | Side | 62 m³ | 7.5 kW |
*Dry solid content